Pet bed



FIG. 1 is a front perspective view of a pet bed showing my new design therefor;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a side view thereof with the opposite side being a mirror image; and,

FIG. 4 is an end view thereof with the opposite end being a mirror image thereof. 

The ornamental design for pet bed, as shown and described. 